Posted by Admin | Posted in Becas | Posted on 23-06-2013
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It has already been mentioned that the variety of laser pointers on the market is truly great. However, it is usually considered that purchasing a 50mW green laser pointer is the best thing to do because it is in the group of the averagely powerful lasers. It is not as powerless as a 5mW laser pointer but it is not so mega powerful like the 250mW laser pointer. Basically, the 50mW lasers are considered to combine the advantages of the other two types. They are powerful enough to be used as astronomy laser pointers but not too powerful to be extremely dangerous to the human health and the human eyesight in particular.
Another problem which may be an obstacle to many people is the price of the laser pointers. People who use them regularly certainly know that there are very cheap but very expensive laser pointers also. What provokes those signs of hesitation is the fact that the exact difference between the cheap leasers and the expensive ones is not known.
Some people consider the expensive laser pointers more reliable than the cheap ones. However, other people share the opinion that the cheap laser pointers, no matter if they are green ones or not, are less safe than the more expensive ones. But the truth has nothing to do with that! In most of the cases there is no significant difference between an expensive laser and a cheap one, especially when it comes down to the specifications. For instance, a focusable green laser pointer can be found at an extremely low price but at a very high price also. The same could be mentioned about the powerful (250mW) laser pointers- there are cheap ones but there are expensive ones too.
The main difference between expensive and inexpensive lasers, without any doubts, is the brand logo which they come with. Obviously, if the lasers manufacturer is one of those famous companies it will cost much more!
To sum up, it is up to the customers individual preferences how much money will be spent on the laser pointer. Anyway, it is recommended that if the laser will be used as an SOS tool, more money is spent on a laser manufactured by a trusted brand. But if the laser pointer will be used for showing text and pictures on the board or screen, a cheap one would certainly do well too.
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